When is the Desert Rats 100K 2027?

The Desert Rats 100K is on Saturday, 10 April 2027, with the start at 05:00 local time.

How hilly is the Desert Rats 100K?

The course has 2,050 m of climbing and 2,050 m of descent. We rate it mountain. It is a out and back course on trail.

What is the weather usually like at the Desert Rats 100K?

Around the race date in 2016–2025, the temperature at the 05:00 start averaged 5°C, rising to about 13°C during the race, with 42% humidity. It rained on about 3% of those days.

How do you get a place in the Desert Rats 100K?

Entry is first come, first served. The standard entry fee is about $325. Check the official site for the current registration dates.

What is the cut-off time for the Desert Rats 100K?

Runners have 20 hours to finish.

UTMB World Series100 kmTrail🇺🇸 Fruita, United States

Desert Rats 100K

Saturday, 10 April 2027In 5 months · Start 05:00

Official site Hotels & flights

Desert Rats: 2 distances

Distance	Date	Climb	Highest point	Start	Cut-off	Entry
100 kmDesert Rats 100K	10 Apr 2027	2,050 m	—	05:00	20 h	$325
48 kmDesert Rats 50K	10 Apr 2027	1,050 m	1,650 m	07:00	10 h	$205

Out and back along sections of the Kokopelli Trail through the red-rock canyon country west of Fruita, Colorado, high above the Colorado River.

The Desert Rats 100K is a trail 100 km ultra in Fruita, United States, on Saturday, 10 April 2027, starting at 05:00. The out and back course has 2,050 m of elevation gain (mountain), and the start temperature on race day has averaged 5°C in recent years. Entry is first come, first served, and the standard fee is about $325. The cut-off is 20 hours.

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Facts checked 10 Oct 2026 against desertrats.utmb.world, desertrats.utmb.world.

Elevation gain

2,050 m

Mountain · ↓ 2,050 m

Start altitude

1,380 m

above sea level, from terrain data

Temp at start

5°C

Peaks around 13°C

Entry fee

≈ $325

Open entry

Finishers

—

typical year

Course

Out and back

20h cut-off

Getting thereFly into GJT (Grand Junction), about 31 km from the start

Plan your trip to Fruita

Race weekends book up early. Searches are set for the race dates.

Photo: Pretzelpaws at English Wikipedia · CC BY-SA 3.0

Hotels near the start lineFri 9 Apr – Sun 11 Apr · 2 nights · closest to the start firstSee hotels on Booking.com Flights to FruitaArrive Thu 8 Apr, fly home Mon 12 AprSee flights on Google Flights

Things to do in FruitaKlook Mobile data in United StatesAiralo Airport transfer from GJTKiwitaxi Rent a carEconomybookings

Some of these are affiliate links: if you book or buy through them we may earn a commission, at no extra cost to you.

Desert Rats 100K course map

A detailed route is not available for this race yet. The marker shows the race location.

Desert Rats 100K elevation profile

Mountain: about 2,050 m of climbing and 2,050 m of descent. A detailed profile isn’t available for this race yet.

Desert Rats 100K race-day weather

At start

5°C

Peak during race

13°C

Humidity

42%

Chance of rain

Wind

7 km/h

10 April in past years

Historical averages for 10 April ±3 days, 2016–2025, from 05:00 for 5 hours (70 days sampled). Source: Open-Meteo / ERA5.

Desert Rats 100K finish times by age group

Top 10 overall, average of the last 3 editions

Men 10:02:50Women 12:34:05

No data yet. We’re collecting age-group results race by race.

Runner reviews

What time could you run here?Adjust your goal time for this course’s hills and typical race-day weather.Race time calculator →

Desert Rats 100K: questions and answers

When is the Desert Rats 100K 2027?: The Desert Rats 100K is on Saturday, 10 April 2027, with the start at 05:00 local time.
How hilly is the Desert Rats 100K?: The course has 2,050 m of climbing and 2,050 m of descent. We rate it mountain. It is a out and back course on trail.
What is the weather usually like at the Desert Rats 100K?: Around the race date in 2016–2025, the temperature at the 05:00 start averaged 5°C, rising to about 13°C during the race, with 42% humidity. It rained on about 3% of those days.
How do you get a place in the Desert Rats 100K?: Entry is first come, first served. The standard entry fee is about $325. Check the official site for the current registration dates.
What is the cut-off time for the Desert Rats 100K?: Runners have 20 hours to finish.

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<a href="https://irun42.com/race/desert-rats-100k" title="Desert Rats 100K on iRun42"><img src="https://irun42.com/badge/desert-rats-100k.svg" width="300" height="120" alt="Desert Rats 100K: course, elevation and race-day weather on iRun42" /></a>

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